British author J.K. Rowling (L) is pictured with a child during the announcement of Pottermore in London, Britain, 23 June 2011.

J.K. Rowling, the author of the “Harry Potter” book franchise, has announced that her next book will be titled “The Casual Vacancy.”

The novel will be her first book for adults, and it is due out later this year. Rowling hasn’t said much about what the book is about, though she did tweet that it will be “Very different to Harry, although I’ve enjoyed writing it every bit as much.”

According to Rowling’s publisher Little, Brown, the new book will be out September 27. The publisher put out this summary of the book:

When Barry Fairweather dies unexpectedly in his early forties, the little town of Pagford is left in shock.

Pagford is, seemingly, an English idyll, with a cobbled market square and an ancient abbey, but what lies behind the pretty façade is a town at war.

Rich at war with poor, teenagers at war with their parents, wives at war with their husbands, teachers at war with their pupils…Pagford is not what it first seems.

And the empty seat left by Barry on the parish council soon becomes the catalyst for the biggest war the town has yet seen. Who will triumph in an election fraught with passion, duplicity and unexpected revelations?

Blackly comic, thought-provoking and constantly surprising, The Casual Vacancy is J.K. Rowling’s first novel for adults.

Last month, the online bookstore on J.K. Rowling’s Pottermore website began operations, allowing English-language readers to buy the digital and audiobook versions of her Harry Potter books.

Rowling’s books have been translated into more than 70 languages and have sold an estimated 450 million physical copies. They also spawned a blockbuster movie franchise.